Festo VABF-S4-1-V2B1 series, Руководство по эксплуатации

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VABF-S4-1-V2B1...
8 Festo – VABF-S4-1-V2B1... – 1705c English
1.3 Operating statuses of the vacuum block
The vacuum block can be in the following operating statuses:
Operating status Solenoid coil 12 Solenoid coil 14 Explanation
Generate vacuum Controlled (via valve
terminal)
Not controlled Solenoid coil 12:
impulse control with
self-latching loop
1)
Generate vacuum Not controlled Not controlled Operating status after failure of
the pilot air supply or the
electrical supply of the vacuum
module
è
Tab. 2
Air saving Controlled
(via internal electronics
of the vacuum block)
Controlled
(via internal electronics
of the vacuum block)
Maintain vacuum in
valve mid-position
1)
Ejection Not controlled Controlled (via valve
terminal)
Vacuum accelerates
disassembly
1)
Normal position
2)
Not controlled Not controlled Status after the end of the
“Ejection” signal
1)
1) Also see
è
Fig. 3 and Fig. 4
2) Normal position means the vacuum block is not in the “Generate vacuum”, “Air saving” or “Ejection” operating status.
Tab. 1 Operating statuses of the vacuum block
If the pilot air supply or the electrical supply of the vacuum block is switched off, the respective operat­
ing status is changed as follows (
è
Tab. 2).